/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:53:23,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:53:23,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:53:23,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:53:23,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:53:23,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:53:23,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:53:23,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:53:23,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:53:23,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:53:23,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:53:23,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:53:23,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:53:23,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:53:23,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:53:23,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:53:23,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:53:23,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:53:23,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:53:23,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:53:23,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:53:23,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:53:23,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:53:23,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:53:23,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:53:23,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:53:23,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:53:23,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:53:23,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:53:23,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:53:23,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:53:23,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:53:23,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:53:23,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:53:23,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:53:23,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:53:23,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:53:23,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:53:23,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:53:23,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:53:23,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:53:23,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:53:23,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:53:23,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:53:23,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:53:23,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:53:23,148 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:53:23,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:53:23,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:53:23,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:53:23,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:53:23,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:53:23,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:53:23,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:53:23,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:53:23,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:53:23,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:53:23,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:53:23,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:53:23,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:53:23,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:53:23,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:53:23,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:53:23,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:53:23,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:53:23,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:53:23,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:53:23,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:53:23,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:53:23,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:53:23,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:53:23,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:53:23,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:53:23,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:53:23,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:53:23,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:53:23,468 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:53:23,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-18 16:53:23,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91fa18832/eed76808dffd43b680101e47091e6ee7/FLAGd7ba6eac5 [2020-08-18 16:53:24,033 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:53:24,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-18 16:53:24,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91fa18832/eed76808dffd43b680101e47091e6ee7/FLAGd7ba6eac5 [2020-08-18 16:53:24,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91fa18832/eed76808dffd43b680101e47091e6ee7 [2020-08-18 16:53:24,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:53:24,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:53:24,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:53:24,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:53:24,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:53:24,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:53:24" (1/1) ... [2020-08-18 16:53:24,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:24, skipping insertion in model container [2020-08-18 16:53:24,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:53:24" (1/1) ... [2020-08-18 16:53:24,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:53:24,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:53:24,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:53:24,905 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:53:25,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:53:25,048 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:53:25,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25 WrapperNode [2020-08-18 16:53:25,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:53:25,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:53:25,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:53:25,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:53:25,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... [2020-08-18 16:53:25,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:53:25,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:53:25,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:53:25,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:53:25,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:53:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:53:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:53:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:53:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:53:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:53:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:53:25,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:53:25,230 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:53:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:53:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:53:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:53:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:53:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:53:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:53:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:53:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:53:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:53:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:53:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:53:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:53:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:53:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:53:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:53:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:53:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:53:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:53:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:53:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:53:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:53:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:53:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:53:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:53:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:53:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:53:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:53:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:53:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:53:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:53:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:53:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:53:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:53:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:53:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:53:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:53:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:53:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:53:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:53:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:53:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:53:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:53:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:53:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:53:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:53:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:53:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:53:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:53:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:53:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:53:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:53:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:53:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:53:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:53:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:53:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:53:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:53:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:53:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:53:26,385 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:53:26,386 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:53:26,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:26 BoogieIcfgContainer [2020-08-18 16:53:26,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:53:26,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:53:26,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:53:26,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:53:26,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:53:24" (1/3) ... [2020-08-18 16:53:26,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2052ed08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:26, skipping insertion in model container [2020-08-18 16:53:26,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:25" (2/3) ... [2020-08-18 16:53:26,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2052ed08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:26, skipping insertion in model container [2020-08-18 16:53:26,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:26" (3/3) ... [2020-08-18 16:53:26,400 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2020-08-18 16:53:26,410 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:53:26,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:53:26,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:53:26,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:53:26,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:53:26,458 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:53:26,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:53:26,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:53:26,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:53:26,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:53:26,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:53:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-08-18 16:53:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:53:26,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:26,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:26,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2020-08-18 16:53:26,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:26,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353994010] [2020-08-18 16:53:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,204 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:53:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:53:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:27,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353994010] [2020-08-18 16:53:27,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:27,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:53:27,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827894695] [2020-08-18 16:53:27,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:53:27,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:27,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:53:27,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:27,326 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 4 states. [2020-08-18 16:53:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:28,565 INFO L93 Difference]: Finished difference Result 317 states and 416 transitions. [2020-08-18 16:53:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:53:28,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:53:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:28,584 INFO L225 Difference]: With dead ends: 317 [2020-08-18 16:53:28,584 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 16:53:28,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 16:53:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2020-08-18 16:53:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-18 16:53:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2020-08-18 16:53:28,694 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2020-08-18 16:53:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:28,695 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2020-08-18 16:53:28,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:53:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2020-08-18 16:53:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:53:28,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:28,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:28,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:53:28,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:28,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2020-08-18 16:53:28,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:28,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636434616] [2020-08-18 16:53:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,080 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:53:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:29,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636434616] [2020-08-18 16:53:29,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:29,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:53:29,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274371115] [2020-08-18 16:53:29,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:53:29,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:53:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:53:29,139 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 5 states. [2020-08-18 16:53:29,620 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:30,651 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2020-08-18 16:53:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:53:30,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:53:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:30,656 INFO L225 Difference]: With dead ends: 256 [2020-08-18 16:53:30,656 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:53:30,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:53:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:53:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-08-18 16:53:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 16:53:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2020-08-18 16:53:30,726 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2020-08-18 16:53:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:30,726 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2020-08-18 16:53:30,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:53:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2020-08-18 16:53:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:53:30,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:30,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:30,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:53:30,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:30,730 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2020-08-18 16:53:30,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:30,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183813030] [2020-08-18 16:53:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,048 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:53:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:31,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183813030] [2020-08-18 16:53:31,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:31,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:31,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790534202] [2020-08-18 16:53:31,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:31,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:31,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:31,217 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 9 states. [2020-08-18 16:53:31,574 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:31,900 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:32,147 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:32,387 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:33,204 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:35,252 INFO L93 Difference]: Finished difference Result 448 states and 568 transitions. [2020-08-18 16:53:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:53:35,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:53:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:35,258 INFO L225 Difference]: With dead ends: 448 [2020-08-18 16:53:35,258 INFO L226 Difference]: Without dead ends: 344 [2020-08-18 16:53:35,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:53:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-18 16:53:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 279. [2020-08-18 16:53:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-18 16:53:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2020-08-18 16:53:35,333 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2020-08-18 16:53:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:35,334 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2020-08-18 16:53:35,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2020-08-18 16:53:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 16:53:35,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:35,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:35,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:53:35,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2020-08-18 16:53:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:35,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116382090] [2020-08-18 16:53:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,614 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:53:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:53:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:35,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116382090] [2020-08-18 16:53:35,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:35,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:35,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13992730] [2020-08-18 16:53:35,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:35,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:35,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:35,723 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 9 states. [2020-08-18 16:53:36,118 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:37,149 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:37,524 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:37,851 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:38,180 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:39,648 INFO L93 Difference]: Finished difference Result 895 states and 1185 transitions. [2020-08-18 16:53:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:53:39,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 16:53:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:39,655 INFO L225 Difference]: With dead ends: 895 [2020-08-18 16:53:39,655 INFO L226 Difference]: Without dead ends: 644 [2020-08-18 16:53:39,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:53:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-18 16:53:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 506. [2020-08-18 16:53:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-08-18 16:53:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2020-08-18 16:53:39,805 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2020-08-18 16:53:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:39,806 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2020-08-18 16:53:39,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2020-08-18 16:53:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 16:53:39,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:39,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:39,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:53:39,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:39,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2020-08-18 16:53:39,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:39,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464932918] [2020-08-18 16:53:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,120 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:53:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:53:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 16:53:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:40,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464932918] [2020-08-18 16:53:40,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:40,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:40,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107144081] [2020-08-18 16:53:40,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:40,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:40,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:40,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:40,261 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 10 states. [2020-08-18 16:53:40,737 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:41,785 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:42,071 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:42,314 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:43,065 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:44,209 INFO L93 Difference]: Finished difference Result 1423 states and 1942 transitions. [2020-08-18 16:53:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 16:53:44,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 16:53:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:44,218 INFO L225 Difference]: With dead ends: 1423 [2020-08-18 16:53:44,218 INFO L226 Difference]: Without dead ends: 945 [2020-08-18 16:53:44,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:53:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-08-18 16:53:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2020-08-18 16:53:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-18 16:53:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 911 transitions. [2020-08-18 16:53:44,444 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 911 transitions. Word has length 66 [2020-08-18 16:53:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:44,445 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 911 transitions. [2020-08-18 16:53:44,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 911 transitions. [2020-08-18 16:53:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:44,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:44,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:44,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:53:44,449 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:44,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:44,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2020-08-18 16:53:44,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:44,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318504167] [2020-08-18 16:53:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,721 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:44,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318504167] [2020-08-18 16:53:44,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:44,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:44,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180654933] [2020-08-18 16:53:44,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:44,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:44,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:44,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:44,888 INFO L87 Difference]: Start difference. First operand 749 states and 911 transitions. Second operand 10 states. [2020-08-18 16:53:45,272 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:46,252 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:46,484 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:46,755 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:47,003 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:49,252 INFO L93 Difference]: Finished difference Result 2518 states and 3561 transitions. [2020-08-18 16:53:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:53:49,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:53:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:49,268 INFO L225 Difference]: With dead ends: 2518 [2020-08-18 16:53:49,268 INFO L226 Difference]: Without dead ends: 1797 [2020-08-18 16:53:49,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 16:53:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-08-18 16:53:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1359. [2020-08-18 16:53:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-08-18 16:53:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1650 transitions. [2020-08-18 16:53:49,604 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1650 transitions. Word has length 103 [2020-08-18 16:53:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:49,605 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1650 transitions. [2020-08-18 16:53:49,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1650 transitions. [2020-08-18 16:53:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:49,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:49,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:49,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:53:49,612 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2020-08-18 16:53:49,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:49,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996923543] [2020-08-18 16:53:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,925 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:50,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996923543] [2020-08-18 16:53:50,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:50,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:50,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129003498] [2020-08-18 16:53:50,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:50,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:50,175 INFO L87 Difference]: Start difference. First operand 1359 states and 1650 transitions. Second operand 10 states. [2020-08-18 16:53:51,448 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:51,683 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:53:51,983 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:52,229 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:53,648 INFO L93 Difference]: Finished difference Result 3144 states and 4258 transitions. [2020-08-18 16:53:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:53:53,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:53:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:53,667 INFO L225 Difference]: With dead ends: 3144 [2020-08-18 16:53:53,667 INFO L226 Difference]: Without dead ends: 1813 [2020-08-18 16:53:53,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:53:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-08-18 16:53:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1399. [2020-08-18 16:53:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-08-18 16:53:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1690 transitions. [2020-08-18 16:53:53,983 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1690 transitions. Word has length 103 [2020-08-18 16:53:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:53,984 INFO L479 AbstractCegarLoop]: Abstraction has 1399 states and 1690 transitions. [2020-08-18 16:53:53,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1690 transitions. [2020-08-18 16:53:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:53,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:53,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:53,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:53:53,990 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2020-08-18 16:53:53,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:53,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921841013] [2020-08-18 16:53:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,264 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:54,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921841013] [2020-08-18 16:53:54,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:54,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:53:54,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005104688] [2020-08-18 16:53:54,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:53:54,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:54,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:53:54,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:53:54,437 INFO L87 Difference]: Start difference. First operand 1399 states and 1690 transitions. Second operand 12 states. [2020-08-18 16:53:54,927 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:55,174 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:55,407 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:56,211 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:56,501 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:56,744 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:58,303 INFO L93 Difference]: Finished difference Result 2768 states and 3642 transitions. [2020-08-18 16:53:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:53:58,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-18 16:53:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:58,316 INFO L225 Difference]: With dead ends: 2768 [2020-08-18 16:53:58,316 INFO L226 Difference]: Without dead ends: 1397 [2020-08-18 16:53:58,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:53:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2020-08-18 16:53:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1119. [2020-08-18 16:53:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-18 16:53:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1322 transitions. [2020-08-18 16:53:58,514 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1322 transitions. Word has length 103 [2020-08-18 16:53:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:58,514 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1322 transitions. [2020-08-18 16:53:58,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:53:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1322 transitions. [2020-08-18 16:53:58,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:53:58,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:58,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:58,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:53:58,518 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:58,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash -237992882, now seen corresponding path program 1 times [2020-08-18 16:53:58,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:58,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444881381] [2020-08-18 16:53:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,812 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:58,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:53:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:53:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:53:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:53:59,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444881381] [2020-08-18 16:53:59,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:53:59,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:53:59,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519285517] [2020-08-18 16:53:59,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:53:59,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:59,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:53:59,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:53:59,192 INFO L87 Difference]: Start difference. First operand 1119 states and 1322 transitions. Second operand 18 states. [2020-08-18 16:53:59,950 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:00,260 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:54:00,555 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:00,803 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:01,473 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:02,049 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:02,436 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:03,826 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:04,165 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:04,491 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:04,802 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:05,331 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:54:05,902 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:54:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:07,861 INFO L93 Difference]: Finished difference Result 2496 states and 3148 transitions. [2020-08-18 16:54:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 16:54:07,862 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-18 16:54:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:07,871 INFO L225 Difference]: With dead ends: 2496 [2020-08-18 16:54:07,871 INFO L226 Difference]: Without dead ends: 1405 [2020-08-18 16:54:07,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 16:54:07,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-18 16:54:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1109. [2020-08-18 16:54:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 16:54:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1299 transitions. [2020-08-18 16:54:08,116 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1299 transitions. Word has length 107 [2020-08-18 16:54:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:08,119 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1299 transitions. [2020-08-18 16:54:08,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:54:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1299 transitions. [2020-08-18 16:54:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 16:54:08,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:08,127 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:08,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:54:08,127 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash 926596768, now seen corresponding path program 1 times [2020-08-18 16:54:08,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:08,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147368955] [2020-08-18 16:54:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,416 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:54:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:54:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:54:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 16:54:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:54:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:54:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 16:54:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 16:54:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 16:54:08,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147368955] [2020-08-18 16:54:08,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:54:08,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:54:08,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341842614] [2020-08-18 16:54:08,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:54:08,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:08,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:54:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:54:08,852 INFO L87 Difference]: Start difference. First operand 1109 states and 1299 transitions. Second operand 19 states. [2020-08-18 16:54:09,470 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:09,839 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:54:10,126 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:10,383 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:11,139 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:11,733 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:12,191 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:13,502 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:13,824 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:14,144 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:14,437 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:15,507 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:15,744 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:16,225 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:16,478 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:17,122 INFO L93 Difference]: Finished difference Result 2067 states and 2619 transitions. [2020-08-18 16:54:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 16:54:17,123 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-18 16:54:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:17,126 INFO L225 Difference]: With dead ends: 2067 [2020-08-18 16:54:17,126 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:54:17,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 16:54:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:54:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:54:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:54:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:54:17,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-18 16:54:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:17,135 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:54:17,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:54:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:54:17,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:54:17,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:54:17,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:54:18,956 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-18 16:54:19,777 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-18 16:54:20,364 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:54:20,595 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:54:20,718 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:54:20,936 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 196